Methods for eruption prediction and hazard evaluation at Indonesian volcanoes

Masato Iguchi, Surono, Takeshi Nishimura, Muhamad Hendrasto, Umar Rosadi, Takahiro Ohkura, Hetty Triastuty, Ahmad Basuki, Agoes Loeqman, Sukir Maryanto, Kazuhiro Ishihara, Mitsuhiro Yoshimoto, Setsuya Nakada, Natsumi Hokanishi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We report methods, based on geophysical observations and geological surveys, for the prediction of eruptions and the evaluation of the activity of 4 volcanoes in Indonesia. These are Semeru, Guntur, Kelud and Sinabung volcanoes. Minor increases in tilt were detected by borehole tiltmeters prior to eruptions at the Semeru volcano depending on the seismic amplitude of explosion earthquakes. The results show the possibility of prediction of the type and magnitude of eruption and the effectiveness of observation with a high signalto-noise ratio. The establishment of background data is important for evaluating volcanic activity in longterm prediction. Typical distributions of volcanic and local tectonic earthquakes were obtained around the Guntur volcano, where geodetic monitoring by continuous GPS observation is valuable. The cumulative volume of eruptive products is valuable for evaluating the potential for future eruption. The eruptive rate of the Kelud volcano is ca 2×10 6 m 3/y (dense rock equivalent), but the volume of the 2007 eruption was only 2×10 7 m 3, suggesting a still high potential for eruption. Based on geological surveys and dating, an eruption scenario is proposed for the activity of Mt. Sinabung, where phreatic eruptions occurred in 2010 after a historically long dormancy.

Original languageEnglish
Pages (from-to)26-36
Number of pages11
JournalJournal of Disaster Research
Volume7
Issue number1
Publication statusPublished - 2012 Jan 1

Keywords

  • Eruption scenario
  • Long-term prediction
  • Short-term prediction

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)

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  • Cite this

    Iguchi, M., Surono, Nishimura, T., Hendrasto, M., Rosadi, U., Ohkura, T., Triastuty, H., Basuki, A., Loeqman, A., Maryanto, S., Ishihara, K., Yoshimoto, M., Nakada, S., & Hokanishi, N. (2012). Methods for eruption prediction and hazard evaluation at Indonesian volcanoes. Journal of Disaster Research, 7(1), 26-36.